A reduction drive is a mechanical device to shift rotational velocity. A planetary gearbox Planetary reduction drive is a little scale edition using ball bearings within an epicyclic arrangement rather than toothed gears.

Reduction drives are found in engines of all types to increase the quantity of torque per revolution of a shaft: the gearbox of any car is a ubiquitous exemplory case of a reduction drive. Common home uses are washers, meals blenders and window-winders. Decrease drives are also utilized to diminish the rotational velocity of an insight shaft to an appropriate output speed. Reduction drives could be a gear train style or belt driven.

Planetary reduction drives are typically attached between your shaft of the adjustable capacitor and the tuning knob of any radio, to allow fine adjustments of the tuning capacitor with simple actions of the knob. Planetary drives are found in this situation to avoid “backlash”, making tuning easier. If the capacitor drive offers backlash, when one tries to listen in a station, the tuning knob will feel sloppy and it’ll be hard to execute small adjustments. Gear-drives could be made to have no backlash through the use of split gears and springtime tension however the shaft bearings have to be very precise.